JPH03296730A - Instant photograph device - Google Patents

Abstract

PURPOSE:To improve the cleanness and handling of a dark box and to facilitate the portage of the device by providing a dark box device, which is used to develop and store a negative and positive sheet joined body after developer spreading downstream about developing rollers freely detachably. CONSTITUTION:The dark box device which is used to develop and store the negative and positive film joined body after developer spreading is provided downstream about the developing rollers 325a and 325b detachably. This dark box device consists of a tray 326 and a light shield lid 327 which is supported freely rotatably and detachably on a support shaft 328 provided to the tray 326 and the negative and positive joined body is received in the space formed of the lid 327 and tray 326. The negative and positive joined body can easily be taken out by opening the lid 327 and when the surface of the tray 327 is cleaned, the lid 327 is detached and the tray 326 can easily be cleaned. Consequently, the instant photograph device which is improved in the cleanness and handling of the dark box is obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a peel-apart type instant photographic device that uses a combination of a negative film and a positive sheet.
More specifically, the present invention relates to an instant photographic device with improved convenience of a dark box device that receives and receives a supply of developer after it has been spread.

[Prior Art] A peel-apart type instant photographic device uses a combination of a negative film and a positive sheet. In a peel-apart type camera (instant photography device), the supplies (negative film and positive sheet) used are small in size, so the negative film and positive sheet are combined in advance and used as a pack film.

However, as the size of an instant photographic device increases, when a negative film and a positive sheet are used as a pack film, the size of the pack film increases, making it difficult to handle and impractical. For this reason, in an instant photographic apparatus that uses a relatively large supply, a method is adopted in which the negative film and the positive sheet are separated and placed on the apparatus in an independent state.

The positive sheet used in this manner is usually used in the form of a positive sheet assembly that is equipped with accessories such as a pond containing developer and a trap mask for retaining excess developer after spreading. Also, when fishing on a boat, the negative film is loaded into a roll type cartridge.
It is set in an instant photography device.

With traditional peel-apart instant photography devices,
The development process is carried out by exposing the negative film, overlapping it with the positive sheet, spreading the developer sealed in the pot, and leaving it in that state for a while.Then, by peeling off the negative film, the image is created. Finish forming.

In this development process, a period of time (approximately half or less of the development time, approximately 30 to 40 seconds) passes when light hits the unexposed silver halide on the photosensitive surface of the negative film without affecting the image. Until then, it is necessary to prevent the negative film from being exposed to light during the development process, so the development process is usually carried out in a dark place, or a light-shielding layer ( Measures have been taken, such as providing a color (black) or, if the positive sheet is a transparent sheet for OHP use, dispersing carbon in the developer to block light.

However, when a black light-shielding layer is provided on the back side of a positive sheet, a white layer is further coated on top of the black layer in order to improve the ease of writing on the back side and the appearance of the back side, so the color of the back side is not bright. There is an inconvenience that it becomes gray and not clean. Furthermore, if the thickness of the positive sheet is made thin, the black color on the back side will be visible on the image receiving surface, and the image on the image receiving surface will have a dull color as a whole, so there is also the disadvantage that the positive sheet must be made thicker. Furthermore, 1) there is the disadvantage that the cost increases due to the increase in the amount of coating on the positive sheet, and the manufacturing process becomes complicated, such as treatment for curling due to humidity control.

Further, in a developer in which carbon is dispersed, color reproducibility is deteriorated due to the carbon, and the manufacturing process is complicated since it is necessary to uniformly disperse carbon.

In order to avoid such problems when the supply is provided with light-shielding properties, there is a method in which a dark box is provided downstream of the developing roller to store the supply after the developer has been spread. As a device equipped with this kind of dark box, for example, JP-A-52-76
There is a developing device for peel-apart type instant film shown in No. 029. According to this apparatus, by using a dark box, it is possible to completely block external light until the end of the development time without providing special light-blocking properties to supplies such as positive sheets.

[Problem to be solved by the invention]

However, according to the conventional instant photographic device equipped with a dark box, the supply after the developer is spread is stored in the dark box provided downstream of the developing roller until the development process is completely completed. The problem is that the main body of the apparatus is occupied by the supply after the developer is spread (which varies depending on the film, but it takes about 1 to 4 minutes), and the waiting time (interval) until the next copy can be executed becomes long. was there.

In addition, if you forget to take out the supply from the dark box during development or after development, in other words, even if the supply after developer spread is stored in the dark box, copying operations can be performed on the main body of the device. Therefore, if the user mistakenly performs the next copying operation, there is a problem in that expensive negative film, positive sheets, etc. are wasted.

In addition, since the developing process can be performed even when the lid for taking out supplies installed in the dark box is open, the developing process is performed while exposed to light, which results in the wastage of expensive negative film and positive sheets. There were also problems.

Furthermore, in conventional instant photography devices, a dark box is provided inside the device main body, so if the dark box and the device main body become contaminated with developer, for example due to a malfunction or jam of the device during developer spreading, There was a problem in that cleaning of contaminated parts was poor. If this stain is left untreated, it may stain the back side of the positive sheet in the next copying process, or it may stain the user's hands.

The present invention has been made in view of the above, and a first object of the present invention is to provide an instant photographic device whose dark box has improved ease of cleaning and handling.

In addition, unnecessary negative film and positive sheets may be wasted due to development when the dark box is not set correctly, or users may accidentally use the A second object is to avoid wastage of expensive negative films, positive sheets, etc. when copying operations are performed.

[Means to solve the problem]

In order to achieve the above-mentioned first object, the present invention is a peel-apart type instant photographic device that uses a combination of a negative film and a positive sheet, and is used for developing and storing a negative film/positive sheet assembly after developer is spread. An instant photographic device is provided in which a dark box device is detachably provided at a position downstream of a developing roller.

In addition, in order to achieve the first objective, in the above-described configuration, the dark box device is rotatably and detachably supported by the supply loading section on which the negative film/positive sheet assembly is placed, and the supply loading section. The present invention provides an instant photographic device comprising a lid member and a lid member.

In addition, in order to achieve the second purpose, a lid detection means detects whether the lid member is open/closed and whether or not the lid member is opened, and based on a detection signal from the lid detection means, printing is performed when the lid member is in an open state or a detached state. The present invention provides an instant photographic device including a control means for prohibiting operation.

In addition, in order to achieve the second purpose, downstream of the developing roller,
Further, the instant photography apparatus includes a supply detection means disposed on the main body side of the instant photographic apparatus for detecting the presence or absence of the negative film/positive sheet assembly after the developer is spread, and the control means is configured to detect whether the negative film/positive sheet assembly is present by the supply detection means. To provide an instant photographic device that prohibits a printing operation when an image is detected.

In addition, in order to achieve the second objective, the negative film/positive sheet is detected at a position on the non-image area side of the negative film/positive sheet assembly and when the rear end of the negative film/positive sheet assembly passes the supply detection means. An instant photographic device comprising: a lid member having a protrusion at a position that abuts the tip of the positive sheet assembly; and a ply mounting portion having a groove that fits with the protrusion at a position facing the protrusion of the lid member. It provides:

Furthermore, in order to achieve the second objective, there is provided a dark box presence/absence detection means for detecting the presence or absence of the dark box apparatus, and a control for prohibiting the printing operation when the dark box apparatus is in a disconnected state based on a detection signal of the dark box presence/absence detection means. An instant photographic device is provided.

[Effect]

In the instant photographic apparatus of the present invention, when the dark box or the like is contaminated by developer, the dark box apparatus is removed from the main body of the apparatus and cleaned. Additionally, the lid member of the dark box device is removed from the supply placement section and cleaned.

The control means determines whether the lid member is in an open state or ! based on the signal from the lid detection means. ! If it is in the detached state, print operation is prohibited.

Further, the supply detection means detects the presence or absence of the negative film/positive sheet assembly.

Further, the control means prohibits the printing operation when the supply detection means detects the presence of the negative film/positive sheet assembly.

In addition, the protruding part of the lid member is configured to detect when the negative film/positive sheet assembly has passed through the supply detection means (turned off).
In addition, when the lid member is still in the dark box apparatus, it comes into contact with the negative film/positive sheet assembly to open the lid member.

Further, the control means prohibits the printing operation when the dark box apparatus is in the detached state based on the detection means in the dark box presence/absence detection means.

〔Example〕

Hereinafter, one embodiment of the instant photographic device of the present invention will be described based on the drawings: ■ Configuration of the positive sheet assembly, ■ Configuration of the negative film and negative film cartridge, ■ Configuration of the entire device, ■ Configuration of the dark box device (of the present invention). main part), ■
Schematic block diagram.

■Role and layout of drive system, ■Role and layout of each sensor, ■Operation unit, ■Configuration of control circuit.

[Phase] The control operation of the control section and (2) the control operation of the development time notification timer will be explained in this order.

■Configuration of positive sheet assembly In this example, the positive sheet (image-receiving sheet) is used as a positive sheet assembly by attaching accessories such as a pod containing developer and a trap mask for retaining excess developer after spreading. do.

1(a), (b), and (C) show the configuration of a positive sheet assembly 100, which includes a black leader 102 attached to the tip of the positive sheet 101 on the image receiving surface side. , developer 103
The image area of the positive sheet 101 and the image area of the positive sheet 101 (Fig.
A tip mask 1041 and both side masks 105 are arranged to improve the image of the end of the aXb area).
．． And a trap mask 106 and both side masks 10
5 and a rail member 107 affixed on top of the rail member 107.

Although the details will be described later, the developer 1 that has flowed out from the bot 103
03a is the rail member 107 and both side masks 105
This structure allows the film to be uniformly spread on the positive sheet 101 to a thickness that is almost the same as that of the film.

The developer 103a is contained in the container 103 in an amount larger than that required for image formation so that the developer 103a is sufficiently distributed to the rear end of the image area. After the excess developer 103a is uniformly spread to the rear end of the image area, it is transferred to a trap mask 106 (portion D in FIG. 1(a)) and a negative film 200 (described later) (portion D'' in FIG. 2(a)). ) is stored between. This prevents excess developer 103a from spilling out into the apparatus, adhering to the developing roller, conveyance path, etc., and contaminating them.

The reader 102 has a positive sheet type identification code in three mark areas M1. M2. It is formed by M3.

Specifically, the mark portions Ml, M2 . For M3, for example, a hole is formed with a punch or the like, and a positive sheet type identification code is formed by a combination of the presence or absence of the size, or,
It may be formed by printing or the like having a different reflectance from the leader 102. In this embodiment, the mark portion M1. M2
．． Form M3.

As described above, since the structure is such that the pod 103 is pasted on the leader 102, as shown in FIG. 1(C),
Mark portion Ml, M2. If M3 has a hole, this hole will be covered by the pound 103. Therefore, the color of the reader 102 is set to black and contrasted with the color of the bot 103 (usually white) to improve detection accuracy.

■Negative film and negative film cartridge 1. In this embodiment, as shown in FIGS. 2(a) and (b),
A negative film 200 wound into a roll is used.

The negative film 200 is made of a long photosensitive strip material (for example, 36 images can be taken), and is wound into a roll with the latent image forming surface (photosensitive surface) inside, as shown in FIG. 2(d). The film is stored in the negative film cartridge 201 as shown in FIG.

The negative film cartridge 201 is resin-molded into a cylindrical shape that includes the rolled negative film 200.
In order to facilitate molding and loading of the negative film 200, the structure is divided into two planes including the axis.

As shown in Figures (d) and (e), the divided parts of the divided negative film cartridge (upper container 201a and lower container 201b) have fitting parts 202 and 203 for coupling, and negative film cartridges. A negative guiding section 204 and a negative feeding section 205 for feeding out the film 200 are formed. The fitting parts 202 and 203 are the fitting parts 202 and 203.
is formed to cover and envelop the fitting portion 203 to prevent external light from entering and exposing the negative film 200 to light. Similarly,
In order to prevent disturbance light from the negative feeding section 205, one end is attached to the upper container 201a inside the negative guiding section 204.
A light-shielding elastic member 206 (for example, Mylar with a flocked cloth attached) is provided, the other end of which is in contact with the negative film 200 using its own elastic force.

Negative film 200 in negative film cartridge 201
When storing the lower container 201b, the tip of the roll-shaped negative film 200 is inserted into the negative feeder 20.
Place it so that it protrudes outward by a few mm. after that,
The upper container 201a is placed on the upper container 201a, and the fitting parts 202 and 203 are fitted to connect the upper and lower containers 201a and 201b.

The connection between the upper and lower containers 201a and 201b is not limited to the above-mentioned method; for example, screws, heat sealing, or the like may be used. Note that a foot 207 is provided at the bottom of the lower container 201b to ensure that the negative film cartridge 201 is mounted in a fixed position in the main body of the apparatus.

Also, on the side surface of the container 201a, there is a mark M4 indicating the type of negative film 200, etc. M5. M6 is installed.

Incidentally, although the front surface of the negative film 200 has photosensitivity, it has a light blocking property against external light (irradiation) from the back surface. The roll-shaped negative film 200 is stored in a bright room (hand-dark room).
The negative film cartridge 2 is in the state shown in the same figure ('b).
01, the shaded areas (the leading and trailing ends of the long film) are exposed. Other areas are not exposed to light if they are tightly wound. The exposed area is a latent image (image)
It cannot be formed and that amount is wasted. Since the negative film 200 uses silver salt, it is expensive, and the waste of this part cannot be ignored. For this reason, in this embodiment, as shown in FIG. The leading end 208 and trailing end 209 are pasted. Therefore,
This prevents the leading and trailing ends from being exposed to light and allows the negative film 200 to be constructed at low cost.

Note that the negative guiding section 204 has, as shown in FIG.
A notch 210 is provided that fits into a pair of pull-out rollers 312 for pulling out the negative film 200, and the negative film 200 is reliably nipped by the pair of pull-out rollers 312 when the negative film cartridge 201 is installed in the apparatus main body. It becomes.

■Configuration and operation of the entire device Figure 3 shows the overall configuration of an instant photographic device using peel-apart type instant photographic film.
an optical system unit 301 for forming an image on the exposure surface), conveying and exposing the negative film 200 to the predetermined position, and further aligning and stacking the negative film 200 with the positive sheet assembly 100;
It is comprised of a conveyance unit 302 that extends a developing section between them and transfers and forms an image onto a positive sheet assembly lOO.

The optical system unit 301 includes a contact glass 303,
A first traveling body 304 consisting of a first mirror and a light source, and a second
A second traveling body 305 consisting of a mirror and a third mirror, and a lens 306. It is composed of a third traveling body 307 consisting of a fourth mirror and a fifth mirror, and a sixth mirror 308.

Here, the light source included in the first traveling body 304 includes a fluorescent lamp 3
73 (details will be described later) is used, and a document placed face down on the contact glass 303 is placed on the contact glass 303.
Irradiate while scanning parallel to 3. At this time, the second traveling body 305 is scanned in the same direction at half the speed of the first traveling body 304, so that the optical path length is kept constant.

In addition, by moving the lens 306 and the third traveling body 307, the magnification and conjugate length are adjusted during zooming.

As shown in the figure, the reflected light from the original is transmitted to the first. Second. as well as.

It is reflected by a third mirror, and is further reflected by a lens 306. 4th, 5th. After passing through the sixth mirror, slit exposure is performed at exposure position A.

The transport unit 302 carries a photosensitive negative roll film (
Negative film 200) A feeding section, a negative film cutter section that cuts the fed negative film 200, a negative film transport/exposure section that transports and exposes the negative film 200, a positive sheet assembly transport section, and a developing section. configured.

The transport operation of the negative film 200 (not shown) will be explained below, and the configurations of the negative roll film feed section, the negative film cutter section, and the negative film transport/exposure section will be shown in detail.

The negative film 200 stored in a roll in the negative film cartridge 201 is pulled out by a pair of pull-out rollers 312a.
, 312b, the rotary blade 313a and the fixed blade 313b
The intermediate roller pair 315a is conveyed onto the guide plate 314.

315b. When the leading edge of the conveyed negative film 200 is detected by the sensor S1 at the exposure position A (or after a predetermined period of time after detection), the first traveling body 304 and the second traveling body 305 start scanning, and the negative film 200
After being nipped by the pair of intermediate rollers 315a and 315b, exposure and latent image formation are performed at exposure position A on the guide plate 314.

Here, if the conveying speed of the negative film 200 during exposure and latent image formation is vH1, the traveling speed of the first traveling body 304 is Vls, and the copy magnification is m, then the conveying speed v8 of the negative film 200 is V, = V y It is controlled by the relationship of X 1 / m.

The exposure position A is a flat surface across the slit area,
And a pair of pull-out rollers 312a.

312b, and an intermediate roller pair 315a.

It is set at the same level as or higher than the nip height of 315b. Furthermore, an intermediate roller pair 315a.

315b and the pull-out roller pair 312a, 312b are almost the same, and after a predetermined time after the negative film 200 is detected by the sensor S1 (intermediate roller pair 315a, 3
15b, or at the timing when exposure is started), the drive of the pair of pull-out rollers 312a and 312b is stopped, and the pair of pull-out rollers 312a and 312b becomes free with an appropriate load. As a result, the negative film 200 can be transported over the exposure position A while being in close contact with the guide plate 314, and the optical path length up to the surface of the negative film 200 and the transport speed can be kept constant. be able to.

Negative film 20 exposed and latent image formed over a certain length
0 is temporarily stopped, and then the rotating blade 313a changes to the fixed blade 3.
By rotating while contacting 13b, the sheet is cut into sheets. The stop timing of the negative film 200 is determined by counting the time t after the sensor S1 detects the leading edge of the negative film 200.

Therefore, the rear end portion of the cut negative film 200 is not exposed to light and no latent image is formed (in other words, exposure and latent image formation cannot be performed). Specifically, at least the distance from the exposure position A to the tip of the fixed blade 313b (this distance is defined as G)
The rear end portion of the negative film 200 corresponding to the above becomes unused, that is, a portion that is unnecessarily wasted. Therefore, the exposure position A is adjusted so that this distance G is smaller than the distance D' (see FIG. 2(a)) from the rear end of the positive sheet assembly 1000 to the rear end of the image area to be transferred onto the positive sheet 101. and a cutter (rotary blade 313a and fixed blade 313b), it is possible to reduce waste of an unnecessary portion (rear end portion) of the negative film 200 that is not used for image formation.

Similarly, the leading end of the cut negative film 200 is also moved from at least the exposure position A to the intermediate roller pair 315a, 315.
Exposure and latent image formation cannot be performed over a distance longer than the distance b (this distance is defined as H), but the distance H is the latent image part where an image is formed on the negative film 200 from the leading edge of the negative film 200. The exposure position A and the intermediate roller pair 315 are adjusted so that the distance to the tip is smaller than the distance C' (see FIG. 2(a)).
a.

315b makes it possible to reduce wastage of the negative film 200.

Furthermore, by cutting the negative film 200 after the exposure is completely completed as described above, it is possible to avoid changes in the transport speed due to the impact of cutting, for example, compared to the case where the negative film 200 is cut during the exposure. , stable transportation is possible.

The cut negative film 200 is transferred to a pair of rollers 316a,
316b and guide member 317, is guided by guide plates 318a and 318b, and is further rotated by roller 320 until its tip portion hits roller pair 321 (here, stop shape m>). transported.

Next, the transport operation of the positive sheet assembly 100 will be explained, and the configuration of the positive sheet assembly transport section will be shown in detail.
This transport operation is performed before the above-described transport, exposure, and cutting operations of the negative film 200.

The positive sheet assembly 100 includes a negative film 20
Unlike 0, it is not photosensitive, so it can be inserted from outside the device. In the instant photographic apparatus of this embodiment, the positive sheet assembly 100 is manually inserted one by one to the left side in the figure along a guide plate 311 at the lower right of the main body of the apparatus. Therefore, there is no need for a paper feeding/separating device, a paper feeding cassette, etc., and the apparatus can be made compact and inexpensive.

When the positive sheet assembly 100 is inserted along the guide plate 311 and both side guides (not shown) and its tip is detected by the sensor S5, the insertion roller pair 3
22 rotates. The rollers of the insertion roller pair 322 are arranged so as to grip only the outer ends of the developer bod 103 (see FIG. 1(a)) attached to the tip of the positive sheet assembly 100 so as not to crush the developer bod 103 (see FIG. 1(a)). has been done. The positive sheet assembly 100 is connected to a guide plate 323a by a pair of insertion rollers 322.

323b and then stopped. This stop timing is determined by counting the time t' after the sensor S6 detects the leading edge of the positive sheet assembly 100.

Further, as shown in the figure, the conveyance path of the positive sheet assembly 100 is bent at at least one place, so that external light does not directly enter the machine from the insertion opening of the positive sheet assembly 100 and expose the negative film 200. It is prevented as follows.

The inserted positive sheet assembly 100 stops at a predetermined position and enters a standby state, allowing printing operation.

Here, when a predetermined print switch is pressed, the above-described transporting, exposing, and cutting operations of the negative film 200 are executed. The negative film 200 that has come into contact with the stopped roller pair 321 is moved by the guide plate 319 and the guide plate 318b.
It is deflected by a certain amount by the conveying force of the roller pair 320 between them. After a predetermined amount of negative film 200 is bent, roller pair 3
21, it is conveyed between the guide plates 324a and 324b. The start of rotation of the roller pair 321 is determined by counting the time from when the sensor S3 detects the leading edge of the negative film 200.

By bending the negative film 200 in this way,
Skew correction is performed by bringing the leading edge of the negative film 200 into the nip between the roller pair 321. The negative film 200 conveyed by the rotation of the roller pair 321 is transferred to the sensor S.
4, the leading edge is detected, and the developing rollers 325a, 325
It is transported to nip b. Depending on the timing from the detection by the sensor S4, the insertion roller pair 322 first rotates and hits the developing rollers 325a, 325b, which are stopping the positive sheet assembly 100, and the negative film 200
Skew correction is performed in the same way. After that, the developing roller 3
25a and 325b start rotating.

Next, the positive sheet assembly 100 waiting at a predetermined position is first conveyed, and then the leading edge of the negative film 200 is rotated by the roller pair 321 to the developing roller 321.
a and 325b, and both develop rollers 3
It is transported at circumferential speeds of 25a and 325b. At this time, a misalignment J occurs between the leading edge of the positive sheet assembly 100 and the negative film 200, but this misalignment J is controlled to be at least smaller than C in FIG. This makes it possible to shorten the length of the negative film 200 that is cut by the amount of this deviation J, compared to a type in which the leading edge of the negative film 200 and the leading edge of the positive sheet assembly 100 are aligned and conveyed. can.

Next, FIGS. 4(a), (b), (C), and 5th
Figures (a), (b).

The developing operation will be explained with reference to (C), (d), (e), (f), and (9), and the configuration of the developing section will be shown in detail.

The developing roller 325a has a shaft 3 fixed to the developing side plate 341.
The developing roller 325a is rotatably supported by a pressure lever 342 that rotates around the developing side plate 3.
41 so as to be rotatably supported.

349 shown in Figures 4(C) and 5(C) and (d)
and 350, the developer 1 is spread from both ends of the negative film 200 and the positive sheet assembly 100 when the developer is spread.
03a protrudes from the developing roller 325a.

The regulating member 349 is rotatably supported around a bin 352 fixed to the developing side plate 341.
50 is fixed to the developing side plate 341. Further, the regulating members 349 and 350 are both developing rollers 325a and 325b.
It enters the groove 355 provided in the.

Figures 5 (a), (b), and (C) show the state of the developing section when the main body of the apparatus is in a standby state. Both the developing roller spacing cam 346 fixed to the cam shaft 348 and the spacing cam 347 of the regulating member 349 are connected to the cam follower 3 rotatably supported by the pressure lever 342.
44 and the lever part 349a of the regulating member 349, and the developing roller 325a is separated from the spring 345.
The developing roller 325b is pressurized by the developer roller 325b. Also,
The regulating member 349 is held in a pressurized state by a spring 351. As shown in FIG. 5(C), the regulating member 349 is configured to maintain a gap P between it and the regulating member 350 when pressurized.

On the other hand, a cam shaft 348 to which cams 346 and 347 are fixed
is configured to be able to rotate in 1/4 rotation increments using a spring clutch (not shown). The position W (FIp, standby position) of the cams 346 and 347 at this time is detected by a predetermined sensor. For example, if the cams 346 and 347 are not in the standby position when the power is turned on, controlled by.

When the positive sheet assembly 100 is inserted along the guide plate 311 in FIG. 3 and detected by the sensor S5, the cam shaft 348 is moved 1/2 in the counterclockwise direction (direction shown in the figure).
It rotates four times and becomes the state shown in FIG. 5(d). In this state, the lever part 349a is pushed by the cam 347, the regulating member 349 is separated from the regulating member 350, and the gap is widened. With this, the positive sheet assembly 100
The toner is reliably conveyed to the nip portion between the developing rollers 325a and 325b without hitting the regulating member 349 and stopping.

Next, the aforementioned negative film 200 is transported, the developing rollers 325a and 325b rotate, and the negative film 200 is rotated.
After a certain period of time has elapsed since 00 was inserted between the regulating members 349 and 350, the camshaft 348 further rotates 1/4 in the counterclockwise direction, as shown in FIG. 5(e).

The state shown in FIG. 5(f) is reached, and the regulating member 349 is in a state with a gap P (in this case, the developer is in a state of regulating the overflow of the developer) as in FIG. 5(C). The rotation timing of the camshaft 348 to shift to this protrusion regulation state is determined by counting the time after the sensor S4 detects the leading edge of the negative film 200.

As described above, when the spreading of the developer 103a by the developing rollers 325a and 325b is completed, the cam shaft 348 further rotates by 1/4, and becomes the state shown in FIG. 5(9).
The cam follower 344 comes into contact with the developing roller 325a.
is spaced apart from the developing roller 325b to create a gap between the rollers necessary for storing excess developer 103a.

Negative film 200 and positive sheet assembly 100
The developer 103 is released by the developing rollers 325a and 325b.
A is ejected into a dark box device (the dark box device of the present invention is composed of a tray 326 and a lid 327, which will be described in detail later) while being spread.

After the developer is spread, a predetermined timer starts to count the fixing time (approximately 30 to 40 seconds), and a display prohibiting the opening of the lid 327 within the fixing time is displayed, and after the fixing time has passed, the inside of the dark box device ( A tray 326 and a lid 327 indicate that the negative/positive bonded body can be taken out from the dark box device. Here, when the negative/positive bonded body is taken out from the tray 326, the rear end is detected by the sensor S7, and the camshaft 348 rotates 1/4 counterclockwise, as shown in FIG. 5(a).

The process returns to the standby state shown in (b) and (C). Further, while the developing rollers 325a and 325b are separated, in other words, until the rear end is detected by the sensor S7, the printing operation is prohibited, so that you do not forget to remove the negative/positive composite. To prevent.

After the development is completed, the operator can obtain an image by peeling off the positive sheet 101 from the negative/positive bonded body. Positive sheet assembly 100 shown in FIG.
Leader of 102. Tip mask 1049 Both side masks 105. And the trap mask 106 is a positive sheet 1
01, and is adhered to the negative film 200 side by the adhesive force of the spread developer 103a, and is easily separated by peeling off the positive sheet 101 from the negative/positive bonded body.

As shown in FIG. 1(a), the length in the width direction of the pound 103 on the positive sheet assembly 100 is set to be equal to the width of the image area or It's shorter. For this reason, bod 1
After 03 is cleaved at part F, it takes some distance (distance indicated by E in the figure) before it spreads into the image area. Also,
As mentioned above, the deviation J when aligning the negative film 200 and the positive sheet assembly IJ-100 should be shorter than the distance C from the tip of the positive sheet assembly 100 to the cleavage part F of the casing 103. figure(
The distance C' from the tip of the negative film 200 to the tip of the latent image section in a) should be at least longer than the distance E from the cleavage section of the bod 103 to the tip of the image forming section in FIG. 1(a).

■Configuration of dark box device (essential parts of the present invention) Referring to FIGS.
The dark box device, which is the main part of the present invention, will be explained.

As shown in FIG. 3(a), the dark box device includes a tray 326,
It is composed of a light-shielding lid 327 that is rotatably and removably supported on a support shaft 328 provided on the tray 326. The dark box apparatus receives the negative/positive bonded body into the space formed by the lid 327 and the tray 326 with the lid 327 and the tray 326 closed. This space is a dark room where external light is blocked. Naturally, the reason why the light-shielding lid 327 is provided on the tray 326 is that, for example, when the positive sheet 101 is transparent for OHP use or thin like paper, the negative film 207 is placed on the tray 326 after the developer is spread. The time it takes for the latent image above to fix is
This is to avoid unnecessary exposure due to the transmitted light since the negative film 200 is exposed to light transmitted from the back surface of the positive film 101, making it impossible to obtain a good image.

As mentioned above, the lid 327 is rotatably and removably engaged with the support shaft 32B fixed to the tray 326, so it can be opened in the direction of the arrow as shown in FIG. The negative/positive bonded body can be easily taken out. Furthermore, when cleaning the top of the tray 326, the lid 327 can be removed to facilitate cleaning of the tray 326.

The tray 326 is rotatably and removably engaged with a shaft (not shown) provided coaxially with a support shaft 328 on the apparatus main body side via a hinge portion 326a, and is used for transporting the apparatus main body, for example. It is possible to easily remove the cover 329 so that it does not get in the way when opening the cover 329 when changing the negative film cartridge 201 or when replacing the negative film cartridge 201.

Furthermore, the lid 327 has a closed state I!, as shown in FIGS. (shape Di indicated by a solid line in the same figure (c)), the sensor S provided on the cover 329
A shielding plate 327a is provided at a position where 9 is turned on,
With this configuration, it is possible to detect that the lid 327 is closed and attached to the tray 326. In other words, when the sensor S9 is in the OFF state, it indicates that the lid 327 is open and not attached. Therefore, the printing operation can be inhibited based on the detection signal of the sensor S9.

In this embodiment, a photointerrupter is used as the sensor S9, but a sensor such as a micro SW or a proximity switch may also be used.

In addition, in the above-described configuration, the lid 327 is controlled by the sensor S9.
Detecting the opening/closing and presence/absence of the tray 326 also serves as detection of the presence/absence of the tray 326, thereby making it possible to reduce the number of sensors, thereby reducing costs and simplifying the configuration.

Furthermore, as another configuration, it is of course possible to provide a sensor on the main body side to detect the presence or absence of the tray 326.

As shown in FIGS. 3(a) and 3(c), the lid 327 has
A protrusion 327b is provided, and the tray 326 is provided with a groove 326b at a position that fits with the protrusion 327b, as shown in FIGS.

This protrusion 327b provides at least a negative signal from the sensor S7.
When the rear ends of the positive joints (100 and 200 in the figure) come off (that is, when the rear ends of the negative/positive joints turn off the sensor S7), the negative/positive joints and the protrusion 327b come into contact with each other. The lid 327 is placed in an open state without being closed, and the sensor S9 described above is arranged so that the opening of the lid 327 can be detected. That is, unless the negative/positive bonded body is completely removed from the tray 326, opening of the lid 327 is detected and the next printing operation is prohibited. Incidentally, the protrusion 327b is provided outside the image area shown in FIG. 1(a) so that the image does not protrude when it comes into contact with the negative/positive bonded body.

Further, the position of the protrusion 327b in the conveying direction is downstream from the tip of the negative/positive bonded body during the development process after the developer is spread, as shown in FIG. 6(C), and the distance y thereof is as shown in FIG. (d
), it is sufficient that the distance X between the rear end of the negative/positive bonded body undergoing development processing and the detection position of the sensor S7 is shorter than the distance X shown in FIG.

Although the details will be described later, a control means (control unit 400, which will be described later) executes printing operation prohibition control based on the detection signals from the sensor S7 and the sensor S9.

In this embodiment, the lid 327 is configured to be able to be opened and closed freely in order to simplify the configuration, but for example, as shown in FIG. It's good as well.

Specifically, the solenoid 330 is energized for a predetermined time period during which the image will not be affected even if light is applied to the negative/positive composite after developer has been spread, and the plunger 301 moves in the direction of the arrow to close the lid 327. When I try to open it, it's 30 while plunging.
1 and the lid 327 come into contact with each other to prevent the lid 327 from opening.

Further, as shown in FIG. 6(f), the lid 327 is automatically opened after a predetermined time period has elapsed when the image is no longer affected even if light is applied to the negative/positive bonded body after the developer has been spread. You can also do it. Specifically, the cam 333, which rotates around the shaft 334, is rotated at a predetermined angle (1
/2 rotations), the cam 333 comes into contact with the lever 305 rotatably supported on the shaft 307, and the lever 30
Push 5 upwards. As a result, the lever 306 provided integrally with the lever 305 comes into contact with the lid 327 and opens the lid 327 upward.

Alternatively, a configuration may be considered in which an arm wheel is provided on the rotation axis of the lid 327 and the lid 327 is opened via a form gear by a motor provided on the protrusion 327b, but in this case, since the foam is used, Lid 327
can only be opened by driving the motor.

■Schematic Block Diagram Next, the configuration centered on the control section 400 will be explained with reference to the schematic block diagram shown in FIG.

The control unit 400 includes an operation unit 500 that is responsible for message display and key manual operation, a switching power supply 600 that supplies power to the main body of the device, and a fluorescent lamp 373 (light source in this embodiment).
, a fluorescent lamp ballast 372 for obtaining a stable output of the fluorescent lamp 373, a fluorescent lamp heater 374, a sensor S20 for detecting the amount of light from the fluorescent lamp 373, and conveyance of the negative film.
Main motor 361 that powers the cutter, each roller, etc.
, a scanner motor 362 for driving the scanner, a mirror motor 363 for moving the mirror during zooming, a lens motor 364 for moving the lens during zooming, and a clutch 365.
370 (details will be described later), a solenoid 371 (details will be described later), and various sensors S1 to 522 (excluding sensor S20) are connected.

■Role and layout of drive system Figure 8 shows the layout of the drive system including the motor, each clutch, solenoid, etc.

The negative pull-out clutch 365 is connected to the pull-out roller pair 31
2a and 312b, and the pull-out roller pair 31
2a and 312b are driven.

The negative feed clutch 366 is connected to the intermediate roller pair 315a, 3
15b, and a pair of rollers 316a.

316b and the roller pair 320 are driven.

The registration clutch 367 is located on the axis of the registration roller 321 and drives the registration roller 321.

The positive feed clutch 368 is located on the axis of the insertion roller pair 322 and drives the insertion roller pair 322.

The developing roller clutch 369 connects the developing rollers 325a, 3
25b.

Cutter clutch 370 drives rotary blade 313a.

The developing solenoid 371 is connected to the developing roller 325a325b.
Switch the mode.

(2) Role and Layout of Each Sensor The role and layout of the sensors S1 to S23 provided in the instant photographic device of this embodiment will be explained with reference to FIG.

The sensor S1 is a negative film leading edge detection sensor disposed on the negative film transport path in front of the cutter. The leading edge of the negative film 200 is detected and used for the start timing of the scanner. Specifically, it consists of an infrared reflective sensor.

The sensor S2 is a sensor for detecting a jam of the negative film 200, which detects an intermediate position of the negative film on the negative film transport path. The time from sensor S1 detecting the leading edge to sensor S2 is used to determine a jam. Specifically, it consists of an infrared reflective sensor.

The sensor S3 is a sensor for detecting a jam of the negative film 200, which detects an intermediate position of the negative film on the negative film transport path. The time from sensor S2 to sensor S3 is used to determine a jam. Specifically, it consists of an infrared reflective sensor.

The sensor S4 performs detection in front of the negative film developing roller. After the negative film 200 detects the sensor S4, the developing roller 325a is activated at a predetermined timing.

Rotate 325b. Further, the rear end of the negative film 200 is detected and the developing roller 325a is activated.

The timing for releasing the pressure contact of the developing roller 325b (that is, the separation of the developing roller 325a) is determined. Further, a jam is determined based on the time from when the registration roller 321 is rotated until when the negative film 200 is detected. Specifically, it consists of an infrared reflective sensor.

The sensor S5 detects insertion of the positive sheet assembly 100. When the sensor S5 detects the leading edge of the positive sheet assembly 100, the mark portion MLM2. of the positive sheet assembly 100 is detected. M3 is arranged so as to be at the reading position of the positive sheet type identification code detection sensor (sensor 510). Specifically, it consists of an infrared reflective sensor.

The sensor S6 performs detection in front of the developing roller of the positive sheet assembly 100. Positive sheet assembly 100
A positioning sensor for stopping the leading end of the developing roller 325a, 325b against the developing roller 325a, 325b when it is inserted and conveyed to the developing roller 325a, 325b. Specifically, it consists of an infrared reflective sensor.

The sensor S7 detects whether or not there is a negative/positive bonded body on the paper discharge tray 326. Specifically, it consists of an infrared reflective sensor.

The sensor S8 senses the back side of the negative film 200 to detect the presence or absence of the negative film 200.

At the same time, the leading and trailing ends of the negative film 200 (
light-shielding papers 208 and 209). For this reason, an infrared reflective sensor is used to read the output of a phototransistor that receives reflected light using an A/D converter, and the difference in output is detected.

Sensor S9 detects the presence or absence of lid 327.

Specifically, it consists of a photointerrupter.

The sensor SIO includes mark portions Ml, M2. Read M3 (positive sheet type identification code). Specifically, the infrared reflective sensor is attached to the mark portions Ml, M2 . Three sensors (Sensor S 10-1.10-2.1O-3) are used to match the number of M3.

The sensor Sll is located at a mark portion M4. on the side of the negative film cartridge 201. M5. Read M6 (negative film type identification code). Specifically, three infrared reflective sensors (sensors 311-1°11-2.1l-3) are used, matching the number of negative film type identification marks.

The sensor S12 detects the open/closed state of the right door for removing the jam. Consists of a photointerrupter.

The sensor S13 detects the cleaning of the developing rollers 325a and 325b and the opening/closing state of the left door used for setting the negative film cartridge 2010. Consists of a photointerrupter.

Sensor S 14-1.14-2 is the developing roller 325a.
.

325b is set.

Specifically, it consists of a microswitch.

The sensor S15 includes a photointerrupter and detects the home position of the scanner.

The sensor S16 is composed of a photointerrupter and detects the home position of the variable magnification lens movement.

The sensor S17 is composed of a photointerrupter and detects the home position of the magnification changing mirror movement.

The sensor 318 consists of a photointerrupter and detects the home position of the cutter.

The sensor S19 detects whether the developing rollers 325a, 325b are at the home position.

The developing rollers 325a and 325b have the following four modes.

(i) Roller pressure, edge controller 0N (ii) Roller pressure, edge controller 0FF (ni) Roller pressure, edge controller 0N (iv) Roller release Among these, (i) is set as the home position, and when the power is turned on, , is in standby state.

The sensor 320 consists of a photodiode and an operational amplifier, and detects the brightness of the fluorescent lamp 373 with the photodiode, converts it into a voltage signal with a current/voltage conversion circuit and an amplifier circuit, and converts it into a voltage signal.
This value is input to the /D converter, taken into the CPU, and used to control the light amount of the fluorescent lamp 373.

The sensor S21 includes a thermistor and detects the temperature of the fluorescent lamp 373. Since the fluorescent lamp 373 has temperature characteristics in light intensity and spectral distribution, its usable temperature range is limited. Therefore, it is necessary to warm it up using the heater 374, and the temperature is detected by this sensor S21 and used for 0N10FF control of the heater 374.

The sensor S22 consists of a thermistor and detects the temperature.

The sensor S23 is composed of a reed switch, and detects a 35 mm projector when it is placed on the contact glass 303. This detection causes the instant photography device to switch to project mode.

■Operation unit FIG. 10 shows the configuration of the operation unit 500, which is roughly divided into an input unit for setting usage conditions of the device, and a display unit for displaying input settings, etc. , print key 501 for inputting copy start, density keys 502a and 502b for adjusting image density, reduction zoom setting key 503a, enlargement zoom setting key 503b, same size setting key 503C, and specifying the size of the original. Original specification magnification keys 504a and 504b, positive sheet ejection switch 505 that commands the ejection of positive sheet 101, display of trouble such as jam occurrence, setting value display such as enlargement zoom value, etc., and copying.1 It is composed of a display panel 506 that displays messages such as, etc., and a development time elapsed display LED 507 that displays the elapsed development time of the negative/positive bonded body.

■Control circuit configuration FIG. 11 shows the configuration of the control circuit of this embodiment.

The CPU 100I has RAM, 8-bit timer, 16-bint event counter, A/D converter,
It is of a type with a built-in serial interface, such as μP07810H manufactured by NEC Corporation or an equivalent device.

The RAM 1002 is of a type with a built-in lithium battery, has a capacity of 2 Kbytes, and stores data such as individual data of the device and the total number of sheets.

8254 (1003) outputs pulses that drive a fluorescent lamp and a DC servo motor (main motor).

The I10 expander 1004 has each motor, clutch,
Drives solenoids, etc. and controls operation parts.

Note that the other configurations are only shown in the drawings and will not be described.

[Phase] Control operation of the control section Based on the above configuration, the control operation of the control section 400 of the instant photographic apparatus of this embodiment will be explained in detail.

The control operation of the control unit 400 is shown in the main flow shown in the flowchart of FIG. 12(a) and in FIG. 12(b).

4 shown in the flowcharts of (C), (d), and (e).
It consists of two interrupt handling routines.

The main flow mainly performs sequence control of the machine and responses to the operator.

First, when the power is turned on, the CPU is initialized.

Memory initialization 1 Initialization processing such as initialization of peripheral ICs is executed (401). Next, a machine initialization process (402) for the scanner, lens, developing roller, cutter, etc. is performed, and an operation by an operator is awaited in a standby process (403). Thereafter, copying operation processing (404) or serviceman mode processing (405) is executed depending on the operator's operation.

The interrupt processing routine is shown in (b), (c), (
dL (e) ni t, 2.5m5et interval,
It consists of four routines: motor encoder, fluorescent lamp lighting, and scanner motor. At 2.5111 sec intervals, various Ilo checks and settings are performed, and time-related operations are performed at the same time. The other three operate only when the motor and fluorescent lamp are ONL, and control servos and the like.

Hereinafter, each process of the main flow described above will be specifically explained in order.

FIG. 13 shows a flowchart of machine initialization processing. If there is no developing roller, +24V will drop and the power will not work. Therefore, the sensor S14 is used to detect the presence or absence of the developing roller (406), and the fluorescent lamp heater 37
4 to 0N (407), and the mechanisms whose states change, such as the scanner, lens, mirror, etc., are initialized (408). At this time, if the negative film 200 is on the conveyance path,
Cutter initial rise is not performed (409°410)
. Further, if the positive sheet assembly 100 is on the conveyance path, it is automatically discharged (411.412);
After that, initialize the developing roller (413),
Once the fluorescent lamp 373 has warmed up, the process ends (414).

FIG. 14 shows a flowchart of standby processing.

The standby process basically checks the condition of the machine (jam, door opening/closing, presence/absence of negative film cartridge, etc.), accepts or accepts the print key depending on the conditions, and then starts work for the next copying process. Pass the uke. First, negative film 2
Check whether the negative film 200 is detected by the sensor on the conveyance path of 00 (415)L, negative film 20
If 0 is detected, it is judged as a jam and the jam display is turned on.
and an error flag is set (416). Similarly, check the open/closed status of the door, and if the door is 0PEN, turn ON the door 0PEN display and set the error flag (
417, 418), check the presence or absence of the developing roller,
If there is no developing roller, a developing roller absent display is displayed and an error flag is set (419, 420). Although not shown in the flowchart, checking the presence or absence of the lid 327 of the dark box tray 326, turning on the lidless display, and setting an error flag are also performed. Then step 42
In steps 1 to 424, inputs using the magnification key and density key of the operation unit 500 are accepted, and the corresponding operations are performed. At this time, by pressing some predetermined keys, a transition is made to serviceman mode processing (details are omitted). Next, the 3-bit black and white code (negative film type identification mark) that indicates the type of negative film 200 provided on the side of the negative film cartridge 201 is read, and the presence or absence of the negative film cartridge 201 and the type of negative film 200 are detected. , the presence or absence of the negative film cartridge 201 and the type of negative film 200 are displayed (425).

After that, if an error flag is set in the above step, a message etc. corresponding to the error will be displayed,
Initialize the error flag to zero (426, 427).

Next, if the negative film cartridge 201 is present (the presence or absence of the 428L negative film 200 and whether or not it is in the film section is determined (429). The sensor S8 checks the presence or absence of the negative film 200, and has light-shielding papers 208 and 209 attached to its leading and trailing ends. Also distinguish between the film part and the light-shielding paper part.

Specifically, the sensor S8 consists of an infrared LED and a phototransistor that checks the reflected light.The reflected light is input to the A/D converter of the CPU, and the
255) data. negative film 20
If there is no 0, there is no reflected light, so the data will be almost zero, and if the back side (black) of the film part is detected, a small amount of light will be reflected, for example 100 to 12
The value is approximately 0. On the other hand, in the case of light-shielding paper, the reflectance is higher than that of the back side of the film section, so the value is 200 or more, and the CPU can determine whether there is a negative film 200 and whether it is a film section.

If the above judgment is a light-shielding paper, in other words, if it is not a film part, the light-shielding paper is ejected (430, 431)
. When the light-shielding paper is ejected, if the light-shielding paper is at the leading edge, the film portion is detected next, so the conveyance is stopped there, and the film is cut with a cutter and then ejected from the apparatus. Furthermore, if the light-shielding paper is at the rear end, it is detected that there is no film, so the paper is ejected as is. On the other hand, if it is not light-shielding paper, the process advances to step 432. If you do not have negative film 200,
The absence of negative film 200 is displayed (433), and in step 434, a positive sheet insertion check and its corresponding operation (
(details will be described later).

If negative film 200 is present, set the no negative film display to 0FFL, check the positive sheet standby flag (flag indicating that the positive sheet is ready) (435, 436), and if the positive sheet discharge switch is on standby. Check whether it is ON or not (437) L, O
If N, execute positive sheet ejection operation (438) L, ON
If not, continue in step 4 until the print key is turned on.
15 or less processes are repeated (439). If the print key is turned on, the status of the dark box device F (ray 326 and lid 327) is checked (439a). Specifically, the detection signal of the sensor S7 is inputted to determine the presence or absence of a negative/positive bonded body in the dark box apparatus, and the detection signal of the sensor S9 is inputted to determine whether the lid 327 is open/closed or present. Here, if the state of the dark box device is not OK (if sensor S7 is OFF and sensor S9 is not ON), LED5
07 is lit to notify the tray 326 abnormality (439
b) l, Return to step 439. Dark box device status is O
In the case of K (when the sensor S7 is OFF and the sensor S9 is ON), the LED 507 is turned off and the process ends (439 c).

Note that the positive sheet ejection switch is turned on by pressing the positive sheet ejection switch 505 of the operation unit 500, and thereby the positive sheet assembly 10
Even after all copying preparations have been completed by inserting 0, the operator is free to automatically eject the positive sheet assembly 100.

FIG. 15(a) shows a flowchart of the positive sheet insertion check and its corresponding operation routine (step 434 in FIG. 14). This routine includes detection of positive insertion by the sensor S5, and detection of the positive sheet type identification code (mark portion Ml of the positive sheet assembly 100) by the sensor SIO.
, M2. M3), and if the type of positive sheet and the type of negative film match, the positive sheet assembly 100 is conveyed to a predetermined position in front of the developing roller and stopped, and if they do not match, it is ejected to the outside of the device. This is a routine.

When the positive sheet assembly 100 is inserted from the positive sheet insertion opening of the device, the insertion of the positive sheet assembly 100 is detected by the sensor S5. At the moment of this positive insertion detection, as shown in FIG. 15(b), the sensor 51
Mark part Ml at position 0.

M2. M3 is located so that sensor S
5, the positive sheet assembly 100 has arrived at a predetermined position, in other words, the positive sheet type identification code (mark portions Ml, M2.M
3) It can be determined that reading is possible. Therefore, if the positive insertion detection is not ON, the positive insertion detection flag is set to 0 and the process ends (440, 4
41).

When the positive insertion detection is ON, it is determined whether this detection is the detection of the leading end of the positive sheet assembly 100 using the positive insertion detection flag. In the flowchart of this embodiment, when the positive insertion detection is ON and the positive insertion detection flag is O, it means that the positive sheet assembly 100 has been detected for the first time, in other words, the leading end of the positive sheet assembly 100 has been detected. shows. Therefore, step 442
If NO, the positive sheet type identification code is read and the positive insertion detection flag is set to 1, indicating that the positive sheet type identification code has been read (44
3).

Here, the positive sheet type identification code is shown in Figure 15 (C).
As shown in the figure, the mark portions Ml, M2 . It is formed with a black and white pattern of M3, and these mark portions Ml, M2 .
The type of positive sheet is assigned to each M3 and coded. However, the mark part MIM2. For M3, a code with an all-white or all-black pattern is not used as an invalid code. As a result, for example, if the positive sheet assembly 100 is turned upside down or inserted with the front, back, left, and right reversed, or in other words, if the sensor S10 detects an all white or all black pattern, the positive sheet assembly 100 Misinsertion can be detected.

Therefore, mark portion M1. M2. If M3 has an all-white or all-black pattern, use the positive sheet assembly 10.
0 is determined to have been inserted incorrectly, R photographic paper 1 is displayed on the operation unit 500, and a buzzer sounds to warn of incorrect insertion (4
44,449) and ejects the positive sheet assembly (450). On the other hand, mark portion M1. M2. If M3 is not an all-white or all-black pattern, the presence or absence of a negative film cartridge is determined (445). Here, if there is a negative film cartridge 200, it is determined whether the type of negative film and the type of positive sheet match (446
) L, if they match, stop the positive sheet assembly IJ-100 at a predetermined position in front of the developing roller, set the positive standby flag to 1, and end the process (447,448
). If the type of negative film and the type of positive sheet do not match, it is determined that the positive sheet assembly 100 has been inserted incorrectly, and the operation section 500 displays "Photographic paper 1", and
A predetermined buzzer sounds to warn of incorrect insertion (444°449). On the other hand, if the negative film cartridge 200 is not loaded, the positive sheet assembly 100
is stopped at a predetermined position in front of the developing roller, the positive standby flag is set to 1, and the process ends (447, 44
8).

FIG. 16 shows a flowchart of copying operation processing. When the print key is pressed, first, it is determined whether the mode is 35mm project mode or not (451), and if the mode is not 35mm project mode, the fluorescent lamp is turned on (452).
, if it is 35mm project mode, step 453
Proceed to. Set the main motor, negative pull-out clutch, and negative feed clutch to 0N (453), and load the negative film 20
0 starts conveying the negative film, and detects the leading edge of the negative film (sensor Sl).
), the scanner is started at a timing according to the set magnification and mode (454).
, 456). If the leading edge of the negative film is not detected, a non-feeding JAM check is performed, and if the leading edge is not detected within a predetermined time, it is determined to be a non-feeding jam.4
59), the process proceeds to a jam processing routine (details are omitted).

Negative film intermediate detection (1), (2) (sensor S2
．． Sensor S3) performs a JAM check in the same way (45
6457, 460, 461). Negative film intermediate detection (
After the negative film 200 has been fed to 2), the conveyance is stopped when the length of the negative film 200-branch has been fed out, the scanner is returned (rotated in reverse), the cutter is rotated, and the negative film 200 is fed. After cutting the negative film 200, conveyance of the negative film 200 is restarted (458-464). After the conveyance is restarted, the registration roller is rotated when the negative film 200 hits the registration roller and the tip thereof is bent to some extent. In other words, skew correction is performed by starting rotation of the registration rollers at a predetermined timing (465). The negative film 200 that has passed through the registration roller is detected by the negative pre-development detection (sensor S4), and after a certain period of time, the developing roller is rotated to perform development (4).
66,468). At this time, a jam check is performed based on the time since the resist clutch was turned on, and if a pre-negative development detection does not detect a jam even after a certain period of time has elapsed, it is determined that there is a resist jam (467). In addition, detection before negative development (
The sensor S4) detects that the rear end of the negative film 200 has passed, and after a predetermined time has elapsed, the developing roller is stopped and the developing roller is set in a spaced state (469.470).
. Start the development time notification timer from this point (
471). Although not shown in the flowchart, when the data of the negative presence detection (sensor 38) indicates the value of light-shielding paper during the above-mentioned copying operation, the CPU determines that the length of the negative film 200 that has been fed so far is the image value. It is determined whether or not there is a length that can be formed (corresponding to l in FIG. 2), and if it is short, the copying operation is interrupted and the negative film 200 and positive sheet assembly 100 are discharged, respectively. on the other hand,
If the length is longer, the cutter operation is omitted and the entire rear end of the negative film 200 is pulled out from the negative film cartridge 201 while the copying operation is executed according to the flowchart. After turning off the main motor (472), dark box tray 3
The time (40 seconds) during which the negative/positive conjugate should be held is measured and displayed (473).

(2) Control operation of development time notification timer Next, a flowchart regarding the development time notification timer will be outlined with reference to FIGS. 17(a) and 17(b).

First, in the development time notification timer start (step 471) of the copying operation process, it is determined whether the supply is for OHP or not based on the positive sheet type identification code detected by the sensor 510 (supply detection means) (701).
). In the case of the OHP supply, the development time (240 seconds) of the OHP supply is set in timer 1 (702).

On the other hand, if the supply is not an OHP supply, a normal development time (90 seconds) is set in timer 2 [703].

Next, the display routine shown in FIG. 17(b) is called every second, the corresponding timer 1 or 2 is subtracted, and the development time elapse display LED 507 (17th
507a to 507f) shown in Figure (C) are turned on. Here, the LED 507a lights up before 40 seconds have elapsed (that is, immediately after the measurement of the elapsed development time has started), indicating a state in which the negative/positive composite cannot be taken out from the dark box tray 326, and LP0107f indicates the completion of development. , LED50
7b, 507c, 507d, and 507e notify the progress.

In the display routine, first, step 7 is performed to determine whether the development time is set for timer 1 or timer 2.
In step 04, it is determined whether or not timer 1 is 0 (that is, if it is not 0, development is in progress), and if timer 1 is 0, step 7
At step 17, it is determined whether or not timer 2 is on. Here, timer 1
When both the timer 2 and the timer 2 are 0, it indicates that the development has been completed.

Therefore, the control unit 400 repeatedly calls the display routine every second until both timer 1 and timer 2 become O, thereby executing the flowchart shown in FIG.

Below, timer 1=240. Taking timer 2=0 as an example, the relationship between the display routine and the development time elapse display LED 507 will be explained.

First, since timer 1=240, it is determined that the OHP supply is being developed (704), and the process proceeds to step 705. In step 705, 1 is subtracted from timer 1. Here, the value of timer 1 is 239 (240-1), so steps 706, 708, 710, 712, 71
Since none of the comparison conditions 4 are met, the process advances to step 716 and LP0107a is turned on. LED like this
A state in which only 507a is lit indicates state B immediately after the start of development (specifically, within 40 seconds from the start of development). Next, the process advances to step 717, and since timer 2=0, the process ends.

Similarly, the display routine is called every second, and the LED 507 lights up as shown below depending on the value after the timer 10 has been subtracted in step 705.

When it becomes 200 or less, the process proceeds from step 714 to 715, and LP0107b lights up.

When it becomes 150 or less, the process proceeds from step 712 to 713, and LP0107c lights up.

When it becomes 100 or less, the process proceeds from step 710 to 711, and the LED 507d lights up.

When it becomes 50 or less, the process proceeds from step 708 to 709.
LP0107 e: lights up.

When it becomes 0, the process proceeds from step 706 to 707, and the LED
507e lights up.

The lighting of LP0107e indicates that the development time has ended, and the value of timer 1 also becomes 0 (that is, timer l-0, timer 2 = 0), so the call to the display routine is also stopped and the processing is stopped. ends.

Timer 1 = 0. If timer 2=90, step 7
Similarly, by 728 from 18, LEDs 507a, 5
07b, 507c, 507d and 507e are sequentially lit at predetermined times to indicate the start of development, the elapse of the development time, and the end of development.

Note that although explanations using flowcharts are omitted, the control unit 4
00 notifies the end of the developing time by sounding a buzzer at the same time as the LED 507e displays.

In this embodiment, since the dark box device is provided in a detachable manner, the device can be easily transported. Further, for example, when the vicinity of the supply outlet provided in the cover 329 becomes dirty with developer, by removing the dark box device,
Cleaning can be done easily. Furthermore, the tray 326
Since the lid 327 is detachably provided, when the tray 326 becomes dirty with developer, it can be easily cleaned by similarly removing the lid 327.

Further, as described above, the lid 327 is in an open state.

Alternatively, if it is not attached, the printing operation is prohibited, so even if the print key is turned on by mistake, expensive supplies will not be wasted.

In addition, if the supply (negative/positive bonded body) is not completely removed from the dark box apparatus and is placed on the tray 326 with the sensor S7 (supply detection means) in the off position, the protrusion 327b and the negative Since the lid 327 is brought into an open state by contact with the positive bonding body, printing operation is prohibited, and even if the user forgets to take out the supply and presses the print key, the expensive supply will not be wasted.

〔Effect of the invention〕

As explained above, the instant photographic device of the present invention is a peel-apart type instant photographic device that uses a combination of a negative film and a positive sheet, and is used for developing and storing a negative film/positive sheet assembly after developer is spread. Since the dark box device is detachably provided at a position downstream of the developing roller, the cleanability and handling of the dark box can be improved, and the device can be easily transported.

Further, in the above-described configuration, the dark box device includes a supply mounting section on which the negative film/positive sheet assembly is placed, and a lid member rotatably and removably supported by the supply mounting section. Therefore, the cleaning and handling properties of the dark box can be improved.

The apparatus also includes a lid detection means for detecting the opening/closing and presence/absence of the lid member, and a control means for prohibiting the printing operation when the lid member is in an open state or a detached state based on a detection signal from the lid detection means. Therefore, it is possible to avoid wasting negative film, positive sheets, etc. due to development etc. when the dark box is not set correctly.

Further, a supply detection means is provided downstream of the developing roller and on the side of the instant photographic apparatus main body for detecting the presence or absence of the negative film/positive sheet assembly after the developer has been spread, and the control means is configured to, by the supply detection means, Printing is prohibited when the presence of a negative film/positive sheet assembly is detected, so if the user mistakenly performs the next copying operation while the supply after developer has been spread is stored in the dark box. It is possible to avoid wasting expensive negative film, positive sheets, etc. Furthermore, by attaching the supply detection means to the main body side, there is no need to exchange signals, etc. between the dark box device and the main body, and there is no need to provide a contact or a connector at the connection between the dark box device and the main body. Therefore, it is possible to easily realize a configuration in which the dark box device and the main body can be freely attached and detached, and the reliability of detecting the presence or absence of a supply can be improved.

In addition, at the position on the non-image area side of the negative film/positive sheet assembly, and when the rear end of the negative film/positive sheet assembly passes the supply detection means, the negative film/positive sheet assembly is detected.
a lid member having a protrusion at a position abutting the tip of the positive sheet assembly, and a position facing the protrusion of the lid member;
Equipped with a supply storage section that has a groove that fits into the protrusion, it is possible to reliably determine whether or not the supply after the developer has been spread is stored in the dark box. It is possible to reliably avoid wasting negative film, positive sheets, etc.

Furthermore, a dark box presence/absence detection means for detecting the presence or absence of the dark box device;
The control means for prohibiting the printing operation when the dark box device is in the disengaged state based on the detection signal of the dark box presence detection means prevents wasted negative film or wasted film due to development etc. when the dark box is not set correctly. It is possible to avoid wasting positive sheets and the like.

[Brief explanation of drawings]

FIGS. 1(a), (c), and (C) are explanatory diagrams showing the configuration of a positive sheet assembly used in an embodiment of the present invention, and FIGS. An explanatory diagram showing the structure of the negative film used in the example, Fig. 2 (b), (
e) is an explanatory diagram showing the configuration of the negative film cartridge of the example, FIG. 3 is an explanatory diagram showing the configuration of the entire instant photographic device, and FIGS. 4(a), (b), (C), and
Figure 5 (a), (b), (C), (b), (e)
, (f) and (6) are explanatory diagrams showing the configuration and operation of the developing section, and Figures 6 (a), (b), (C) and (d) are the configuration of the dark box device of the instant photography device of the present invention. FIGS. 6(e) and 6(f) are explanatory diagrams showing another embodiment of the method of opening and closing the lid of the dark box device. FIG. 7 is a schematic block diagram of the instant photographic device of this embodiment. FIG. 8 is an explanatory diagram showing the layout of the drive system including the motor, each clutch, solenoid, etc., FIG. 9 is an explanatory diagram showing the role and layout of the sensor installed in the instant photographic device of this embodiment, and FIG. FIG. 11 is an explanatory diagram showing the configuration of the operating section, FIG. 11 is an explanatory diagram showing the configuration of the control circuit of this embodiment, FIG. 12(a) is a flowchart of the main flow, FIG.
), (d). (e) is a flowchart of the interrupt processing routine, the first
Figure 3 is a flowchart of machine initialization processing, the first
Fig. 4 is a flowchart of the standby process, Fig. 15) is a flowchart of the positive sheet insertion check and its corresponding operation routine, and Figs. An explanatory diagram showing the detection and configuration, FIG. 16 is a flowchart of copying operation processing, FIGS. 17(a) and (b) are flowcharts regarding the development time notification timer, and FIG. 17(C) is the display of the development time elapsed display LED. It is an explanatory diagram showing a state. Explanation of symbols 100...-Positive sheet assembly 101...-
・-Positive sheet 200-・-Negative film 326-・
・-Tray 326 a-----Hinge part 326
b...--Groove 327--Lid 327 a--Blocking plate 327 b--Protrusion 328--
One support shaft 400 --- Control section (control means) 500 --- Operation section Ml, M2. M3...Mark part M4. M5.
M6... Mark part S7... Sensor (supply detection means) S9-...
・-sensor

Claims (6)

[Claims] (1) In a peel-apart type instant photographic device that uses a combination of negative film and positive sheet, the dark box device used for developing and storing the negative film/positive sheet assembly after the developer has been spread can be installed and removed at a position downstream of the developing roller. An instant photographic device characterized by being freely installed. (2) In claim 1, the dark box device includes a supply mounting section on which a negative film/positive sheet assembly is placed, and a lid member rotatably and removably supported by the supply mounting section. An instant photographic device comprising: (3) In the second aspect, a lid detection means for detecting opening/closing and presence/absence of the lid member, and based on a detection signal of the lid detection means, when the lid member is in an open state or a detached state, An instant photographic device comprising: a control means for prohibiting a printing operation. (4) In claim 3, the control further comprises a supply detection means, which is disposed downstream of the developing roller and on the side of the instant photographic apparatus main body, and detects the presence or absence of the negative film/positive sheet assembly after the developer is spread. An instant photographic apparatus characterized in that the means prohibits a printing operation when the supply detecting means detects the presence of a negative film/positive sheet assembly. (5) In claim 4, the lid member is located at a position on the non-image area side of the negative film/positive sheet assembly, and the rear end of the negative film/positive sheet assembly passes through the supply detection means. The supply mounting part has a protrusion at a position where it comes into contact with the tip of the negative film/positive sheet assembly when the assembly is made, and the supply mounting part is fitted with the protrusion at a position facing the protrusion of the lid member. An instant photographic device characterized by having a groove. (6) In claim 1, dark box presence detection means detects the presence or absence of the dark box device; and based on a detection signal of the dark box presence detection means, printing operation is prohibited when the dark box device is in a detached state. An instant photographic device comprising a control means.